Yes, if you delete an OnlyFans account, all your subscriptions will get canceled instantly.
She provides access to nearly 100% of her naughtiest and raunchiest photos, videos and other content for her subscribers, no extra charges and no additional tipping required.
If you are a content consumer, then you should be mindful of the fact that it is very likely to get bored of the content creator very soon, and then buying a yearly subscription will be a waste.